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首页> 外文会议>International Conference on Thermomechanical Processing of Steels and other Materials >The effect of prior deformation of austenite on toughness property in ultra-low carbon bainitic steel
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The effect of prior deformation of austenite on toughness property in ultra-low carbon bainitic steel

机译：奥氏体对超低碳贝氏体钢韧性性能的优先变形的影响

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For the purpose of investigating the trend oftoughness versus variation of microstructual constituents foran experimental ultra-low carbon bainitic steel, theexperiments (with and without prior deformation) have beencarried out on a Gleeble 1500 machine. The charpy impactspecimens were prepared from the samples treated by theGleeble machine. The impact absorbed energy for toughnesswas measured, and the corresponding fractographs, opticalmetallographs and transmission electron micrographs havebeen examined. The result shows that the prior deformation ofaustenite promotes the formation of intragranular non-parallelplates of acicular ferrite but stifles the formation of sheak-likeparallel plates of bainitic ferrite. Furthermore, the studyemphasizes that the microstructure containing a high volumefraction of acicular ferrite possesses better toughness than themicrostructure containing mainly bainite.
机译：为了研究迄今为止微观组分的微观组分变化的趋势，实验性超低碳贝氏体钢，实验（有了，没有先前变形）在GLEEBLE 1500机器上造成了。夏比撞击分枝由由紫外线处理的样品制备。测量韧性的冲击能量，以及相应的特征，光学机械和透射电子显微照片被检查。结果表明，austenite的先前变形促进了针状铁氧体的鞘内非平行物的形成，但扼杀了贝氏体铁氧体的抗衡性平板的形成。此外，含有高容积的针状铁氧体的微观结构具有比含有贝氏体的重组结构更好的韧性。

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